Spray gun



FIG. 1 is an isometric view of a spray gun;

FIG. 2 is a right side view of the spray gun of FIG. 1;

FIG. 3 is a front view of the spray gun of FIG. 1;

FIG. 4 is a left side view of the spray gun of FIG. 1;

FIG. 5 is a rear view of the spray gun of FIG. 1;

FIG. 6 is a bottom view of the spray gun of FIG. 1; and,

FIG. 7 is a top view of the spray gun of FIG. 1.

The broken lines shown represent portions of the spray gun that form no part of the claimed design. 

CLAIM The ornamental design for a spray gun, substantially as shown and described. 